Buttonhole-sewing machine.



J. KIBWIGZ. BUTTONHOLE SEWING MACHINE.

APPLICATION FILED APR.10,1911.

A msn ss I Patented June 25, 1912.

7 SHEBTSSHEET 1.

,575 MM Mk1. pm

J. KIEWIGZ.

BUTTONHOLE SEWING MACHINE.

APPLICATION FILED APILIO, 1911. I v j g g Patented June 25, 1912.

7 BHEIITS -SHEET 2.

"7 fi 3 2 M 20M J. KIEWIUZ.

BUTTONHOLYE SEWING MACHINE. APPLICATION IILEDAPR. 10, 1911.

Patented June 25, 191% 7 SHEETS-SHEET 3.

5 \QNN a v J. KIBWIOZ. BUTTONHOLE SEWING MACHINE.

APPLICATION FILED APR.10,1911.

Patented June 25, 1912.

msm m MEETS-SHEET 4.

J. KIE WIOZ. BUTTONHOLEK SEWING MACHINE. APPLICATION FILED APR.10,1911.

Eatented June 25, 1912.

7 SHEETS-SHEET 5,

4.72 ZZWAQQJQ J, KiEWIG/l BUTTONHOLE SEWING MACHINE. APPLICATION FILEDAPR.10,1'911.

' Patented June 25, 1912.

7 SHEET$ SHBET 6.

J. KIEWIGZ. BUTTONHOLE SEWING MACHINE. APPLICATION FILED APR410,1911.

Patented June 25, 1912.

7 SHBETSSHEBT 7.

. .50 1 115* m5 9 z .113. & 5'55 To all whom it may 6mm.- i

* Hyde Park, county of Norfolk, State of, Massachusetts, have inventedan Improve- JOHN KIEWICZ, or HYDE PARK, .iviAssAcnusErrs, ASSIGNOR 'romason summon HOLE MACHINE COMPANY, orrosron, MASSACHUSETTS, \Aconronnrron or MAINE.

BUTTONHOLE-SEWING MACHINE.

Specification of Letters men.

PatentedJune2 5,1912.

, wApplic ation-iileii'Aprfl 10,;191-1. Serial .No. eraser).

- Beit known that;I, .TOH'N Kmwfoz, a citi Zen of the United States,andresident of ment in Buttonhole sewing Machines, of

which the following description, in 'connection with theaccompanyingdrawing," is a specification, like characters representinglike parts. f

. This invention relates more particularlyto buttonhole sewmg .machinesof the- Reece type, and it. hasfor its' object the prpduction of "a.machine of such general type embodying various novel features ofconstruction,v and arrangement whereby the .joperation of the machine asa whole is improved, its running speed increased without objectionablevibration, and the adjustment of certain parts simplified.

IntheReece' type of buttonhole sewing machine, exemplified in UnitedStates Patent No; 349,359"dated September 21, 1886,

' and No.-655,637, dated August 7 1900, both granted to Reece, and alsoin the Hill Patent, ,No. 713,764, dated November 18,, 1902, the workingpartsof the apparatus are mounted upon a heavy and stationary base, thestitchforming instrumentality being carried by a frame which ismove'dautomatica'lly upon and with relation to the stationary bed-platein the formation of the buttonhole, the

work-clamp being held upon such bed-plate in fixed position. ()fnecessity the stitchforming devices are heavy, and a strong and -massiveframe is requisite for their proper support, so that the Weight of themoving parts in such a machine will be between 25 and 40 pcundsfor more,according to the size of the machine as a whole. To effect themovementof the frame and the parts carried thereby requires. a veryconsiderable expenditure of power, and the momentum of this heavymovable mass of-I'nechani-sm'is also objectionable, for thereby thespeed at which the machine can be run is limited.

This is relative, however, for as-a matterof fact these commercialmachines are run ll ,a

high speed, but the demands for yet greater to beattained withoutdetriment to the machine or to the work'produced thereby.

on the drawing 7 'It has been proposed here'tofore to re-l duce the.weight of the movingparts of a buttonhole sewing machine by mounting thestitch-forming .instrumentality on a fi xed frame, and moving thebed-plate, thus reducing somewhat. the weight to be moved anddecreasing-the power required to operate t-h'e machine, but practicalmechanical diificulties have more than oifset the slight advantagessecured, and so far as I am aware such machines have had a very limiteduse.

In my present invention the bed-plate and the frame carrying .thestitch-forming i n-,

strumentality are rigidly connected and are held stationary upon thebase of the ma chine, and the work-clamp alone is bodily movable, itswmovements being controlled automatically to effect the propercooperation' of the; stitching and cutting devices therewith in theformation of a buttonhole.

By this novel arrangement and construction I reduce the weight of thebodily movable "part or parts to a minimum, whereby not only is lessoperating power required than heretofore but .by the minimizing oftheweight the momentum of the bodily movable work-clamp ceases to .be afactor and the speed at which the machine can be run is limited only bythe ability of the operator. In the machine tobe describedherein I havemade use of the stitch-forming instrumentality shown in thepatentsreferred to, wit-h practically the same general control of itsoperation, and I have herein utilized the high and' low speed mechanismshown in said patents, so that in the drawings I have illustrated the'old-mechanisms only so far as they are necessary to-aproperunderstanding of the'novel features of my invention.

The various novel features of my invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims.

Hereinafter in describing the mechanism I have applied to old-and wellknown parts, 'so far as possible, the reference characters employed inthe prior patents above mentioned, inrorder that a clear understandingthereof may be had. I

' Figure 1 is a left-hand side elevation of a suflicient portion of abuttonholesewing ma- 3O parts which would obscure the view; Fig. -6

chine of the Reece type,'with my present in-. vention embodied ther in,the "stationary frame or head on whichthe greater portion of thestitch-forming instrumentality is mounted being br'okenfofl at the top,and the base being partly indicatedfiby dotted lines for, clearness ofillustration, thevarious parts being shown in the position as- 4sumedafter a buttonhole has been stitched and cut, with'the work-clampopen, and the -feed-shaft is shown in'section on the .line

11-, Fig. 3 Fig. 2 isa topplan view (It the bed-plate withthegreaterjpart ofthe fi ame or head omitted, the partsshown beingin theposition illustrated 1 Fig. 3-is an underside view of the-bed-plateandthe f mechanism mounted thereon, .mcluding'the feedmontrollingmeans, themeans for. open- .ing and closing. the work-clampgautomati cally, andap'ortiofi of the stitch-forming instrumentality; Fig.4 is a right-handside elevation and partial longitudinal section of i p the bed-plate andsome of the devices mounted thereon forcontrolling the operation of thework-clamp and the stitch-forming in strumentality, the curb or casingfor the main or feed-cam being omitted; Fig.5 is

an enlarged detail in front elevation and .partial section, on the line55, Fig. 2, of

thework-clamp and its adjuncts, omitting is an underside view, enlarged,of the movable work-clamp,to show more particularly the construction ofthe lower or main member of the .clamp and its detachable connec-- tionwith the work-.Clampslide; Fig. 7 is an enlarged detail in sideelevation of upper and lower members of the work-clamp and a portion ofthe devices for opening and Hand 12 are details, partly diagrammatic,

designed to illustrate more clearly the bodily v movement'of thework-clamp during the formation of a buttonhole, such movement beingtaken with relation to'a permanently positioned member of thestitch-forming instrumentality, and alsowith relation to the path of theneedle at difierent periods in the cycle of operations by which thebuttonhole is made, Fig. l3-is a top plan view of the workcla'mp slideand the controlling cams carried thereby, the main cam by which theslide is actuated being shown'- beneath it; Fig. 14 is a detail of therear'end .of the starting lever and adjacent partsshown in Fig 3, thefeed-shaft being omitted; Fig. 15 is a right hand side elevation ofjthemeans for clutching and unclutching the I stitch shaft from its drivingpulley.

The bed-pl a-te A pivoted at A onthe base A", (shown in dotted linesFig. 1),.the stitch"- frame or head having afoot A seated ontheibedfplate' and 'theoverhanging arm A havingbearingsfor the sh'aft'Awhich actuates stitchfforming mechanism comprising a needle-bar A"carrying an eye-pointed needle A 'and slidable in a gear A 'meshingvwith a sector gear A fast on the vertical rock-shaft A", maybe and areall of well known construction substantially as shown in'one or more ofthe patents referred to, with the important'eXcept-ion that herein thefoot A of the stitch frame is rigidly secured', as by bolts 200, to thebed-plate A; The complemental parts of the stitch-forminginstrumentality. located below the bedplate include an underTthreadcarrying nee.-

dle and a looper, (not shown herein) all sub stantially as in theReecePatent No. 655,637, said complemental partsbeing. operated by the gear45 and sector gear A fast on .the lower end of the rock-shaft A", Figs.1 and 3. The shaft A is rocked by its attached arm A, connected by ,linkB with the-lever B fulcrumedat 13 on the curb or casing B secured to orforming a part of the bedplate A, the lever B having a roll or otherfollower 13 'cotiperating with the groove B in the main cam Bf withinthe casing, see Fig. 3, all substantially as in Patent No. 655,637.Inasmuch as the stitchforming construction and mode of operation of thestltch-formlng lnstrument-alltylnvolve no novel features so far as mypresent lnvenv instrumentality herein has no bodily movement relativelyto the bed-plate -A it is to, that-extent dissimilar to the structuredisclosed in said'patent, butthe specific tion is concerned and requireno further de- B sustained in bearings in the rearward ex--.

vscription or illustration; Saidcam B has l usual peripheral worm-teethto be' engaged tension B 'of the curb, and the upper side of the cam inpractice has a suitable projection 57 'to a'ctuate'the buttonhole cutterat the proper. time, the only part ofthe cutterherein shown beingindicated at, G

Fig. l, the cutting mechanismbeing fully shown in the patent lastreferred to. A pros 'jection B61011 the underside of the camintermittingly engages a roll B on the clamp- 7 closing lever B anddepresses the lever ates certain stitch-forming mechanism in well knownmanner, is operatively connected with the feed-shaft B? by means substantially such as shown in the Hill patent,

such'means including an eccentric C, (see dottedlines Fig. 4)cooperating arm C to rock the'upright lever G a shiftable fulcrum stud(3 9* for said lever, and a clutch device G connectedwith and rotatingthe any. the

referred to is shown in Fig.

ating to siitchtliebutt liolei The fulcrum stud C scarrie 7 rear end pftheleVer-J-D,pivoted ooncentrierockeshaft a I on the 7 bearing callyiwith th hub Qasinfthe Hill patent, the front'end of theleverflparrying aroll 8*, ;Fig. -15,Z-

which cooperates with astitch-controlling cam to be'r'eferredtohereinafter.

Referring to Fig. '15, .thewcluteh-do ac-.

' tu'ating lever'a fast on the right han end of rock-shaft a, thespring-controlled stop-- lug a slidable in thelev'er aQ'the dependingarm'a fa'st on the opposite end of said 'rock-, shaft, to at timesactuate 'the three arlne'd lever 01, pivoted ata on the underside of thebed-plate, the finger a on said lever,

cooperating withgthe grooved hub a of the continuously driven pulley erotatably mounted on the feed-shaft B and the lugs c, 0 carried by saidshaft and pulley,

respectively, to'couple or connect said parts the-bed-plate has a largecent-rally disposed when the feed-shaft is to be driven atthe higherspeed, are. and may be all substantially as in theHill patent. It willbe understood that when the buttonhole'isbeing stitched the feed-shaft Bis rotated intermittingly 'at the lower speed by its connec tion withthe stitch-shaft A", but when-the work-clamp is movedtoward or away fromthestitching positionthe said feed-shaft will be "operatively connectedwith and driven at the higher speed by means of the pulley a with whichsaid shaft is then clutched.

Before describing the novel features of the machine the cycle ofoperations involved I in making a buttonhole will be-set forth,

starting with the work in the open-workclamp and with the parts in theposition shown. in Fig. 1. 9

The operatordepresses the starting lever a and thereby the feed-shaft Bis set into operation at the higher speed, the clamp being.elosedimmediately upon the work,

whereupon the work-clamp is moved for wardbodily from the cuttingposition into' position for the stitching to begin.- When this positionis reached the controlpof ithe feed-shaft-is shifted automatically fromthe pulley a to the pulley f then clutched to the stitch-shaft Abringing into action the stitch-forming instrumentality', and thework-clamp is'again moved forward bodily, "or to the right, Fig. 1, stepby step while one side .of thebuttonholeis stitched. Theneedle-bar isnow turned, as in the patents referred to, and a bodily lateral movementof the work-clamp is efiected while the eyeend of the buttonhole isstitched, and there-.

after the work-clamp is fedrearward step A portion oftheby$st'fepI-rotation or the fe d-j stilt S" c v latter-attirerihigherspeed," which causes a @rearward toplace ter G and -the cutting'mechanism is oper- Q ated-to out thestitehed buttonhole. During .shown.in Big. The r clutched from the feed-shaft just after the by step;thesecond side of the buttonf hole is s h shaft A9, and .the high-speedpulley cfutched .to the feed-shaft to rotate the rapid 'bodilymovementof the work-clamp the work beneath the cutthe cut-ting, operation the"work-clamp is held stationary, after. which an additional and finalrearward. movement is given to clamp, bringing it into the positionpulley (i is unclamp is opened automatically, such opening of the clampbeing effected simultaviieously with the final rotativemovement of theneedle-bar {to starting position for stitching, and the cycle ofoperations in volved in. the formation of the buttonhole is completed.

In accordance with mypresent invention longitudinal and substantiallyrectangular opening 12 therein, see Figs. 2 audit, extending from apoint nearthe feed-shaft B well forward toward the front end ofsaid'bed-plate. At one side of said open-' ing, at the forward endthereof, is mounted a longitudinally extended guideway 13 having arigidly connected lateral shank 14 slidable in an opening 15, see dottedlines Fig. 3, in the depending'side rim or flange of the bed-plate, thefront end of the guideway resting upon an car 16 on the underside of thebed-plate, and at-its inner end said guideway rests upon, a lug 17projecting into the opening 12. Said guidewayhas a longitudinal groove18' in its inner face, Fig. 5, and to the underside of the shank 14: isadjust-ably secured a plate '19'having a depending stud 20, Fig. 3,which is held against the inner edge of a horizontally stitched, therebycompleting the stitching. this point in the cycle the stitch-forming:instrum'entality is thrown out 'of'foperation by the unclntchingof'thefio swinging lever 21 fulcrurned at 22 on .the

bed-plate. Strong springs 23 attached at their outer ends to thebed-plateand at their inner ends to the guideway 13 not only hold thestud 20 in engagement withthe lever 21 but they also effect outwardlateral movement of said guidewayg A shifting lever 24c having a fixedfulcrum 25 carries at itsrear end a roller or other stud 26 which passesthrough a hole 27, Fig. 3, in the bottom of the curb B and enters agroove 28 in theunderside of the cam B, the front end of the lever beingan adjustable stud 29 which cooperates with the outer edge of the lever21. The cam '125 slotted longitudinally for the reception of"substantially S-shaped, to impart to the front end of the shifting lever24 an out and in movement at each revolution of the.

' cam B, whereby the guideway 13 is moved laterally outward from itsnormal position and then inward past normal,'and back to normal as theroller 26 again enters the cir cular part of the cam groove. Thislateral shifting of the guideway is effected when.

' the needle is stitching around the eye-end of the buttonhole, .andeffects at such time the requisite lateral bodily movement of thework-clamp to enable the stitching to be performed properly.-

- present invention, comprlses essentially a The work-clamp, 1naccordance with my lower member, upon which the work rests,

upper clamping members mounted uponand .movable relatl.- 1yto the lowermember, to

clamp the work thereupon, and laterally movable spreaders located 0n,thelower v'inember of the clamp beneath the upper members, the clampedportion of thework being held between said upper members and thespreaders. The lower member .of the clamp is herein shown as arectangular metal plate 31 having near one of its side 1 edges alongitudinal groove 32 in its lower face, to receive the guideway 13,see Figs.

'5 and 6. A thin ear 33 on said member 31 is arranged. to slidablyenterthe groove 18 in the guidewaywhen the work-clamp is in position,preventing any lifting of the clamp during the operation of the machine,

the bottom of the clamp member 31 resting upon the top of, the bed-plateA around the offtfhe opening 12, as shown in Figs. 2 and 5,; andas'shown in. Fig. 2 the clamp-is in its extreme rearward position. Themember 3"; has an elongated central opening 34for-athe passage oftheneedle A during the stitching of the bu ttonhole', and on the top of3 said member, at each side of the needle opening, opposite and likespreader's 35 are mounted, fulcrumed at their front ends at 36, saidspreaders having roughened portions 37, Fig. 2, to insurea firm holdupon the underside of the work when clamped. Asshown in Figs. 2and- 6the laterally swinging Spreaders are shaped substantially to accordwitlr'th'e outline of sides and'front endofthe forward portion inneredges of the rearwardlyextended and Q ,the buttonhole to be stitched, asat 38. In-

ward movement of said Spreaders is limited by stop pins 39, and aslotted toe 40, is'adust-ably. mounted on the rear end of each spreaderby a set-screw 41.

Bearings 42, 43 on the .top'o ffthe clamp member 31 at its rear end'support a trans verse clamping-rock-shaft 44 havingfixedl-y attached toit the hubs of depending toes 45, which extendthroughsuitable openings 1,46 in the member 31.

The lower end of each toe is inturned and socketed at 47 'for.

the reception of a strong spring 48, Figs. 5 to 9, the free end of eachspring bearing against the opposed tail 49 depending from the hub '50 ofa curved and frontwardly extended arm 51 overhanging the clamp mem-' ber31.v -As shown in Figs. 2and 5 the.

free endsof the arms 51are bent inward 1 #toward each other to lie abovethe spreaders 35, and each arm has pivoted .to itat 52 the slotted ear53; of one of the upper clamping members 54, and as shown by dottedslight rocking movement on its pivot to enable it-to rest squarely andfirmly upon the work, as is usual in the Reece type of "machine.

lines Fig. 7 each of said members has-a In Fig; 9 theclampi'ngmembers-54am I shown-in clampirig position upon the work NV.- The hubs45* of the toes 45 are fixed on the' shaft 44 adjacent the. inner endsof the bearings '42, 43, and the hubs 50 of the clamp-carrying arms 51are loose on said shaft between the hubs 45 Springs-55 attached to thebottom of'the clamp member 31 act upon the tails 49 to elevate the arms51 and unclamp the work whenever the clamp-closing toes 4'51 assume theposition shown in F igsr5 to 8 inclusive, and thus the springs 55 may betermed clamp-openw ing springs. Said springs. also tend nor-- mall'y tomove the hubs 5O inward on the rock-shaft 44 so that the inneredges ofthe tails act upon the spreaders 35 and hold them against the stop pins39, thelateral separation .of thespreaders, effected by means to bedescribed,thus moving with the m,against thestress of" the springs55the.arms 51' and-the upperclamping members 54 which at thattime are inclamping position. WVhen the rock-shaft 44' is turned to depressthe'toes 45 the. springs 4am compressed more or less, depending 'uponthe' thickness of" the work; and they act upon the tails 49 to depressthe front ends of'the arms 51 and thereby to force the upper clampingmembers 54 firmly upon the work W, Fig. 9', the work then being clampedbetween said members 54' and the spreaders 35. g

. As herein shown the hub of the toe 45 turned lug 62 at its free end,for a purpose 5 flee; Figs."8 and 9, I

to be described, the shaft andclamping cam Q 57 being held by a, spring63' in inoperative position, shown inFigs. 5, 7 and 8, with a part ofthe hub 60 against a stop pin 64.

tom of i Q The hub 60 isalso provided with a finger transverse latch thelatch crossing the path-of movement 7 0 the dog 56 to close thework-clamp, and in .piece- 65, by

means of which the clamp mechanism can be operated by,handwhen desired.r

An ear 66 on theftop of the extension has pivoted to it at 67 aninwardly extended, 68 normally held down against a' stop pin 69by alightspring 70,

suohmovem'ent'the .dog 56 wipes-under and temporarily lifts the latch,the spring 70 pulling the latch-down behind the tip of said dog,see'Fig. 9, when the clamp is closed. It will be apparent that the dogis now looked bythe latch, With the upper clamping members 54 closedupon the work, i and the work-clamp cannot be opened until the latch istrippedto release the dog, such release permittin the springss48 and 55to Jmove the various movable parts of the workclamp to the positionsshown in Figs. 5 to 8,

andv also in Fig. 1. v The inner end ofthe locking latch'68 is bent topresent a cam 71- inclined to the gen- .er'al plane of said latch, andatthe proper time in the buttonhole making cycle sa d cam is acted uponby. a tripping or releasing finger 72 on the vertical rock-shaft A", so

that as said finger engages the rear or under face of the cam'71 therotation of the shaft A will cause the-finger to elevate the cam andlatch, to thereby release the; dog 56 and permit the work-clamp toopenby the means 5 described.

Referring to Fig. 1,.the front end of the clamp-elosing'lever B hasjointed to it at 73 an upturnedlatch-lever 74 having a notch 75 adaptedto at times engage the lateral lug 62 on the rocker arm 61, previouslyreferred to, the lever passing through a slot 76 in the bed-plate, Fig;2, and a spring77 acts to yieldingly hold the lever against the frontend o'f' Slot When the parts .of the machine are posiitioned asin Fig. 1in readiness to begin the cycle of operations the operator'depresses thestarting lever a, and the mach ne is I clamp 'is' closed upon p startedwith] the high speed mechanism in action, as usual, and theclamp-closing lever B is depressed. This action draws down thelatch-lever 74,,a-nd. as the lug 62 is in thenotch 75. the camshaft 58is turned from the position shown in Figs. 7 and 8 to that shown in 9,the cam 57 swings forward the dog 56,; and by the means. described thepassing under the latch 68 and as the latter drops down behind the. dogthe clamp is locked iii-closed position.v Such closing and locking/ofthe clamp-is thus'efi'ected auto matically as. the cycle of operationsbegins, and befo-rethe lever 13 again rises to normal position, suchrise disengaging -the latch-lever 74 from the lug 62, leaving the thework, said dog 'the remainder of the cycle -'Should it become necessaryreopen the clamp by hand duringthe stitching operation the latch 68 1stripped by hand, and thereafter said clamp can be again closedby. meansof the fingerypiece 65.' I

t movementof the work-clamp bodily' will now be described, particularreference being hadto. Figs; 2, 3, 4 and 13. The partB ofthe curbcasting B in which the feed shaft 13 has its bearings is provided with acentrally located, longitudinal guideway'78 for the. reception of therear end or tail 79 of the work-clamp slide or carrier 80, the peculiarshape .of said carrier in plan being clearly shown in Fig. 1 3. Inpractice said carrier is made as a strong and rigid metal plate, thetail being widened to provide a guidew'a'y 78; the front end of thecarrier havingfla laterallyjextended head 81. The front end 82 of thecarrier is slidably 'supported on the top of the curb casting B opening12 in the bed-plate. A depending roller or other stud 83 depends fromthe car rier and enters a groove 84 in the. top face of the main cam B,whereby the rotation of the cam governs the fore and aft'slidingmovement of the'carrier. Inasmuch as the movement is very important Ihave 1nd1,

specific portions of the cam groove 8ft. Durfrom 88 to 89 the work-clampis moved rearward to place the work in the clampin position tobeoperated upon by the cutter, and the dwellportion of the cam groovefrom'89 to .90 maintains the clamp stationary during the operation ofthe cutter. From 90 to 85 theworlr-clamp is given a slight-and finalrear Ward movement to initial position and the machine-stops, the cyclehavingbeen completed.

through the angle-between S5 and 87 the through the pulley a, and thelow speed mechanism, driven through pulley f", Fig. 15, is in actionduring the revolution of the cam through the angle 87-88, and then thehigh speed mechanism is again thrown into work-clamp free to. belm ovedbodily during cated on Fig. .13 themovements effected by stitched.During the angular mo'vement' "high speed mechanism is in action, drivenThe means for effecting the foreandaft r .firm -guide ,port ion forcooperation with p 9& which extends beneath the front part of the ingthe angular movement of the cam B It may be stated that while the cam isrevolved action and continues incontrol until theangle 88-90-85 istraversed and the machine comes to a stop; 4

At the inner end of the head 81 the clamp carrier is provided with anupright ear 91 having a socket 92 in its outer vertical face,

see dotted lines Fig. 13', the saidfac'e being extended frontwardly by acam 93, the socketbeing'adapted to receive a.ball-1ike lateralprojection 94: on a stiff spring-finger. 95 fixed at one endon a lug- 96depending -from the'bottom of the clamp member 31,

see Figs-5 and 6, and adjustably held thereon by set screws- 97. Whenthe said member 31 is seated on-the bed-plate A, in proper cooperation/with the laterally movable guide bar 13, as has been described, 1t isslid rearward until the projection. 94: rides upon the cam 93 and thensnaps. into the socket 92, detachably but positively connecting thework-clamp and lts sliding carrier 80. When said parts are so connectedthe work-' clamp moves frontward or rearward in unison with'its carrier,as will be apparent, and when the guide bar 13 is moved laterally by thedescribed devices during the turning H movement of theneedle whenstitching the eye-end of the buttonhole the projection94' canmove-inward and outwardin the socket 92 while the lateral movement oftheworkclamp is effected by said guide: bar 1 3,'the

spring-finger 95 at such time maintaining the connection between thework-clamp and its carrien I It is necessary at times it fz detach, thework clamp from the carrier,"andto"facilitatesuch detachment I havepioted at 98 in the carrier head 81 a releasing :lever99,normallyretr'acted by a spring 100,'F-ig. 5, and

located justback of the car 91. By swing ing said lever to. the right,Fig. 5, itpresses againstthe' free end of the. spring finger 95 anddeflects it enough to withdraw the proje'ction 94 from the socket 92,thereby disconnecting or uncoupling the work-clamp has three upright Joutermost cam bar h hasza'high part 12 which is beveledat its'rear' end,at 13*, and said bar coiiperates with the roll 8", Fig. 15,

servingias a stitch controller. During the StltClfingoOf one side of thebuttonhole, when the work-clamp is moving frontward, the ,roll 8*? restso'n'the high part 12", and travels down the bevel 13 when stitchingaroundthe eye begins, and when such stitching is completed the rollrides up the bevel, (the Work-clamp then moving rearward) the rollresting on the high part 12 when the'other ri'se and fall of the roll 8shifting the fulcrum stud C in a manner similar to that I described inthe Hill patent. -'As the stitchcontroller cam bar [L moves in unisonwith the work-clamp carrier the fore and aft adjustment of said bar bymeans of its set screw 103 provides for the stitching ofbuttonholes ofdifierent length.

In Fig. l5the clutch-dog d and its tail (Z are as in the Hill patent,the engagement of the tailjwith the stop-lug a operating to release orunclutch the pulley f from the stitch-shaft A, and inFig; 15 I haveomitted parts shown in Fig; 4, to' make the drawing clearer.- ,7

7 Referring now to Fig. 1 the oppositely extended arms f, f on the hub'of the depending arm a the lug 32 on arm 1. and

thespring f 't0 lift said arm against the adjus't'able stop f thepivoted latch f shouldered to at times engage the lug 82?, and thereleasing projection f on the latch, are all as in the Hill patent. So,too, the radius bar 9'. pivoted on the arm f and having a stud 9provided at the outer side of the bar with a roll 9 the lever g pivotedon they ing a toe g and anotch 37 to at'timesengagetheinner end of studg and the spring 9 are all as in the Hill'patent, and operate as thereinset forth.

The middle cam. bar if is thelengthcontrolling bar, it also moving foreand aft in'unison with the work-clamp, setting of 6 said bar frontwardby means of its setscrew 103 providin for a longer button hole, whilerearwar provides for the stitching of a shorter buttonhole, as will beobvious. Said cam bar has an incline'lO L'near its front end, an ad-vjacent .high part 105, and'ashort incline 106, Figs. 2 and, and the rearend 107 of adjustment of the bar the bar is adapted to cooperate attimes v with the projection f The lever a', Fig-15, must be turned todisengage the stop lug a? from the'ta'il of the clutch-dog 6Z3 in orderto bring into action the stitch-forming mechanism by clutching thepulley f to the shaft A, to

rotate the latter.'

Referring now to Fig. 4, when the frontward movement of the carrier 80moves the worlr clamp to theleft to clamp the work and position itproperly with relation to the stitch-forming devices, the roll 9 (lockedin the position shown in Fig. 4) will ride up the incline 104 as the cambar It moves frontward with theclamp carrier, and there by the threearmedlever f, f, a is turned to rock shafta and lever a is moved to'release the clutch-dog, substantially as in the Hill patent while thearm a swings the lever a to u-nclutch the pulley a. As the arm f isdepressed the latch f is brought into engagement with the lug 32* andtherethe stitchforming period" of the cycle, Af- I causing the latch fby the said three 'armed lever is locked during the stitch-making periodof the cycle. in order to release the radius-bar g from thenotched'lever g the toe g of the latter ter the eye-end of thebuttonholehas been stitched the work-clamp is moved rearward, or to the right,Fig. 4, while the second side i of the buttonhole is 'stitehed,.and Lduring this movementthe projection f is" struck by the rearend 107 ofthe cam bar 7?", to release the lug 32f,

permitting spring f to turn the shaft a and lever a .into position toenable the stoplug a to engage the tail of the clutch-dog dfl'Fig. 15,to unclutch the shaft A from i the pulley f t. Simultaneously the. arm amoved into position to permit the spring 102 to operate the lever a andagain clutch the pulley. a to the shaft B The stud g? is also broughtinto engagement with the upright re-setting abutment 109 on theinnermost cam bar 7110, during the final rearward movement of thework-clamp carrier, to push the stud into operative engagement with thelever g and thereby fe-set the adjacent-parts in the relative positionshown in Fig. 4-, in readiness for thecommencement of the next cycle. Assoon as the roll 9 has reached the high part 105 of the cam the movementof the rockshaft a, and lever.

a is completed, so far as release of the clutch-dog d is concerned,hence the. re.

lease of the'radius-bar 9 permits movement of the roll 9 away from thecam-bar h, to avoid any interference with other parts of the mechanismas the cycle is continued-and completed. I have made the bar It adjustable in order that the resetting abutment 109 may be properly set, butordinarily after the cam bars 71 and h are once-set there is no occasionfor readjustment. The

set-screws 103 are at all times readily accessible at the top of thebed-plate A, and when it is necessary to make an adjustment it can bedone'rapidly and easily without any interference with the other parts ofthe mechanism. mounted on the carrier head 81 they move as a unit withthe carrier and with the work-clamp in the frontward and rearwardmovements thereof, giving absolute positiveness to the relation of theparts at all times.

It will be seen thatin their general 'functions the cam bars hereincorrespond to the while 7 the work-clamp As the cam bars are all rigidlyresetting,

cut, but the manner in mounted and actuated is of necessity materiallydlflerent.

having at its inner end an adjustable stud 112 which lies the path ofthe rear end of move the outer arm of the .lever against a stop ll iwhenthe carrier moves outward. The-outer end of the lever has pivotallyconnected with it a link 115 having a cam face 116 adjacent its link isinterposed between the convexed end 10f the. tee a? on the rear end ofthe lever a and a depending lug 117, see Fig.14, on the underside ofthe'levera located on the underside of the bed-plate and pivoted thereonat 118, Fig. 3. The front end of upon by the lower end a of the startinglever 0, substantially as in the Hill patent, to hold the lever in theposition shown in Fig. 3 when the machine is at rest. When thestartinglever is moved to start the ma Fig, 3 away from the dog a, andimmediately the strong spring 102* operates to rock finger an outward,to thereby clutch together the pulley a and the feed-shaft B and at thattime the thick part of thefllink 115 is in position between the lug 117and the finger a. Co-ns'equentlythe clutching movement of lever' (1causes its finger a" to force outward the link and the lug 117, so thatthe lever a is rocked and the dog (4 moves inward in front of the end aof the starting lever, holding the latter temporarily in startingposition. As the frontward movement of the work-clamp carrier is begun(under the influence of the high speed pulley a) the carrier tail 79moves away from the stud 112 and the sp'ring 113 rocks the lever 111until its outer arm engages the step 114, whereby the thick part of thelink 115 is withdrawn from the tinger a" and lug 11-7, and then thelever is free tobe returned to its normal position shown only in Fig. 3.When said lever 1s returned to normal position its dog releases thelower end a of the starting lever a. the latter, which isspring-controlled as in the patents referred to, then resumingitsthereof is inside the dog a and the lever (0 is thereby held against anyrocking movement. The clutch lever a is. rocked at the pioper time tothrow the pulley a out of action, and at the same time the, lowspeed lpulley f is thrown into action, all as has been described, to controlthe mechanism Attherear end of thebed-plate A,-Fig. 3,1 X pivotn'pon itsunderside at 110 a lever 111 the carrier tail 79, a spring 113 operatingto free and thinend, which normal position, Fig. -1, and now the end alength-controlling and stitchcontrolling members shownin the Hillpatwhich they are lever a has a dog a thereon which is acted 'chine itslower end o is moved to the left,

thelever. a, moving its rear end and the by the action of the usualreturn spring 30f),

while the stitching of the buttonhole is effected, and then the highspeed pulley is again brought into action to effect the movement of theworkfclamp'into position for the cutter Gr to operate. Thereafter thefinalv rearward movement of the work-clamp carrier causes its tail 79 toengage the stud 112 and the lever 111 is rocked to force the thick partof the link 115 betweenthe finger a and-the lug 117 It will'beremembered that as 'the lever a? is now locked'from swinging movementthe lug 111 isheld Stationary and serves as an abutment past which thecamface 116 slides, so that the finger a" is moved away from the lug1,17 and thereby the clutch, lever a -is-ret-urned to inactive Iposition after the completion of the button position, Fig. 3, the fingera at such time effecting the unclutching of the pulley a,-

and the machine as a whole comes to rest, the cycle having beencompleted. Thus the stoppage of the machine is controlled by themovement of the work-clamp carrier to, final hole, and thelever 111 andits connected link 115- constitutes a stopping device governed by theclamp carrier 80, and the link'of such device is also made effective toimpart the initial swinging movement to the lever a when the spring 10 2acts the first time to operate theclutchle'ver a.

-Referring to Fig. 2 it' will be seen that when the clamp is closeduponthe' work the toes 40 of the Spreaders are behind the vertica lrock-shaft A and as the closed work 35 clamp is moved frontward toposition for the-buttonlioleto *be stitched the toes pass on oppositesides of said rock-shaft and are thereby separated, to swine thespreaders 35 outward'and thereby strewn the work. As theupper'clampmembers 54 are now clamping the workupon the 'spreaders the lateralmovement of the latter causesthe members 54 to move with them, the hubsof the arms '51 sliding outward upon the shaft 44, The pressure of theclamp members 54: upon the. spreaders holds them against the lower clampmember 31 in spread position during the stitching and cutting of thebuttonhole,

so that the portion of the work in which the,

buttonhole is to be made is held taut and stretched during suchoperation,

Referring to Fig. 10 the position of the rock-shaft A and its trippingfinger 7 2 with relation to the latch cam 71 is shown at thecommencement of the cycle of operations, and corresponds tot-he positionof such parts shown in Figs. 1, 2 and 3 Now the work- -clamp is movedfrontward to stitchingposition, and the stitch-forming instrumentalityis thrown into action while the front-ward movement of the work-clamp iscontinued step by step and one side of thebuttonhole is stitched as at SFig. 11, and then the rock-shaft A3 is turned to the position thereinshown, with its tripping finger 72 in the path of the latch cam 71, theturning of said rock-shaft causing-the needle-bar to travel in an arc tostitch the eye-end S of the buttonhole, as in the patents lreferred'to.Dur ing the stitching of the eye-end the work- 'clamp is moved laterallyby "or through the operation of the laterally movable guideway v or bar13, previously described, and nowthe second side of the buttonhole is-to he stitched. Beginning with the parts in the relative position'shownin Fig. 11 the-work clampris moved rearward step by step and the secondside S of the buttonhole. is stitched, see Fig. 12, and the stitching iscompleted, so that the stitch-forminginstrumentality-is thrown out ofaction and the highspeed pulley e is thrown into action to continue at arapid rate therearward movement ofthe workclamp. As the latter is aboutto'attain its final rearward positionthe rock shaft- A is tunned torestore V theineedle-bar and needle to starting position in readinessfor the nextcycle, and as the finger 72 turns from dotted to full lineposition, Fig. 12, it wipes under the cam 71 and raises the latch 68 torelease the dog 56, and thereupon the work-clamp is. opened to releasethe-work. i

In Fig. 2 I have not lettered the different portions of the cam groove84, asthe said portions are frilly and clearly indicated in Fig. 13.

From the foregoing description, taken in connection withihe drawings,it' will be seenthat while various portions of the mech-- anism aresubstantially the sameas arev shown in the Reece and Hill patents to iwhich reference has been made the general arrangement and operation ofthe machine as a whole is materially different, rendered necessary bymaking the stitch-forming instrumenta'lity stationary as a whole, andmounting it upon the bed-plate, while the work-clamp and its adjuncts,(having very little weight) are made to move bodily upon and withrelation to the bed-plate. This construction reduces the operating powernecessary to run the machine as a whole, and

enables me 'to operate it at a. very muchhi'gher rate of speed withoutany improper and objectionable vibration or jar.

- While I have herein referred to high speed and low speed mechanismsfor controlling work-clam 'mentality, actuating means for said withrelation, to, said; stitch-forming instru- WOIk clamp, including areciprocating carrier slidablymountedf on the undersi bed-plate and.movable longitudinally in said guideway in: a fixed path inthe directionof the length of a buttonhole, separate means to. impart a lateralmovement to said Workclamp, during the stitching of the eye-end of abuttonhole, and a positive connection between the carrler and.work-clamp=perm1t- 51 prising a l p Y of said parts to enter a lateralsocket in theother ofsaid' parts.

2- In a butt nh ting lateral movement of the latter relatively to the:carrier, said connection comaterally yielding member on one I le sewingmachine, abstationary bed-plate having an opening therein, a.-stitchrformijng instrumentalit-y, support- I ingmeans therefor: fixedlyattached to the bed-plataga work-clamp. movable inward and; outward; onsald bed-plate I over the said opening providing for pening herei theoperation of the complementalparts of i r the stitch-forminginstrumentality (above eral' -socket in the other part, and meansindependentof the carrler-reciprocatlng means I toeifect peri'odicallateral movement of the work-claimp'relatively to the clamp-carrier.

3. In a buttonhole sewing machine, a stationary bedplate havinganelongated open ing, a, sti flh-formingjin strumentality mounted onsaid bed-plate; and adapted to form stitches-f at ahsubsta tially fixedpoint relatively thereto, a laterally movable guidewaymountedonandbeneath'the bed-plate with.- in the opening thereof andparallel to the length f he huttonhole' o b stit h d, mechanisnfto movethe and: periodically, a wort-clamp having a lower member grooved,longitudinally on its [underside to slidably engage-the guideway,

lateral movement of the guideway causinga device to prevent accidentaldisconnection; of the latter and-the work-clamp, and mechanismpositively connected directly with the lower member of the work-clamp tomove it bodily upon and lengthwise of the guide-.

way, to position'the work with respect to tlie'stitch making pointduring'the stitching of the opposite sides of the buttonhole, the

bodily lateral movement of the work-clamp in unison therewith. I r \l4'. In a'buttonh'le sewing machine promovable-upon the, 'upperlside; ofhe hef-nlate into. nd t at ppslt o fi e of the uidew ay laterallynegates :vid d with a stitch-harming instrumentality adapted to makeoveredgestitches, a, stat onary bed-plate on which. said instrumentalityis supported, a work-clamp comprising upper and lower members, -thelower member being slidable upon the bed-platein; the direction of thelength of abuttonhole and also at right angles thereto, a recipro eatingcarrier slidably mounted on the bedplate. and connected with thework-clamp,'a

fixed guideway on the-underside of said bed-plate vin which the carrieris movable longitudinally and by which the carrier is held from lateralmovement, an: actuating cam for' the carrier a guide-barniovably mounted'in the be -plateandparallel to the length, of the buttonhole to bestitched;

and in direct and continuoussliding engagement with the lower memberotthe work- 'cliunp adjacent one side thereof, and means to, move saidguide-bar, and through it the r -work,- c1an p,in a lateral directionbodily when the eye-end of the .buttonhole is-belng stitched, theconnection betweenthe' carrier and "the work-clamp comprising a lateralmemberon oneof said parts to enter freely a lateral socketin the otherpart, thereby permitting lateral movement of the workvclamp. relativelyto the carrier.

In dbuttonhole sewing machine providedwith a stitch-forminginstrumentality adapted to make overedge' stitches, a stationarybed-platoon "which said instrumentality is supported, awork-clampmovable upon said bed-plate longitudinally and laterally with respect to'the stitch-making point, said clamp having a lower member provided witha longitudinal groove in its I under side, a guide-bar mounted on thebedplate and laterally movablethereon, to enter the groove in said clampmember, means to lock said member and the-guide-bar in slidingengagement, mechanism tofleii'e 'ct periodical lateral movement of theguide-bar,

a longitudinally reciprocating carrier slid-,

ably mounted on the bed-plate, a separable, laterally yieldingconnection'between said carrler and the lower member Ofthew ork-. clamp,wherebythe latter ismoved longi tudinally by the carrier when the'sidesof .the buttonhole are being stitched, the said connection permittinglateral movement of the clampwhen the eye-"end of t-he button hole isbeing stitched, and a manually operate'd device to separate said carrierand the work-clamp.

-6. In a buttonhole sewing machine pro- 4' vided with a stitch-forminginstrumentality adapted to stitch a buttonhole, a work-clamp.

comprising a centrally slotted lower member. arrd'notiperatmg upperclamplng members at the sides of the slot, a transverse rock-shaftmounted on the lower member,

overhanging arms fulcrumed on .said rockshaft and supporting theupperclamping I i 50 clamp member.

members, each arm having an extension depending below the lower member 7of the clamp, downturned toes fast on the rockshaft'and Opposite saidextensions, a spring 5 interposed bet-ween eachextensionand itscooperating toe, means to rock said shaft and thereby causeth'e toes tocompress the springs and cause the upper clamping members to descendupon the work, the springs in permitting work of varyi g thlckness to beclamped, and meansto lock the rock-shaft when the upper clampingfmembersare depressed, combined with mechanismto move the work-clamp'bodily withrelation to the iS'Stitch-forming instrumentality during the stitchingofv a buttonhole, and a device to release the rock-shaft after thecompletion of a buttonhole. I I

7. In a buttonhole sewing machine, a

work-clamp comprising a lower ,memberlcentrally slotted for a portionof'its length, cooperating upper clamping members at the ;sides 1of theslot, supporting armsfforand ,connected with said; upper members, acom-- inon fulcrum forsard arms, mounted on the lower member and onwhich fulcrum said arms are movable laterally toward and from eachother, laterally. movable spreaders' on the lower member, beneath theupper clamping members,' yielding means to normally,

move said arms inward on the fulcrum and 'thereby move the upperclamping members and the Spreaders toward the longitudinal axis of theslot lnfihdlOWGI' member of the 35, clam each-arm having a dependingpart engaging the adjacent spreader, and means to swing the supportingarms on said ful-,

crum and cause the upper clamping mem- 'bers ,to clamplthe workbetween-them and 40 the spreaders, combined witha-stitch-forming'instrumentality to stitch a-buttonhole,

mechanism connected with thef'lower mem; ber of the clamp to move said;work-clampT odily with relation to; the Said instrumen- 't'ality duringthe stitching of a buttonhole, "and a relatively fixed device-toootiperate di- 'rectly with and separate the spr'eaders before thestitching begins and thereby stretch the clamped work abovethesloti'nthe lower 8; In a buttonhole sewing machine pro- Vided with astitch-forming instrumentality including a vertical rock-shaft rotatedat predetermined intervals, a. stationary bedplate on which saidinstrumentality is,

mounted, and having an opening through avhich the rock-shaft extends,afwork-clamp bodily movable uponthe'be'd-plate and over the openingtherein to present the clamped work to said stitch-forminginstrumentality, said clamp includinga lower member and upper clampingmembers carried thereby, a dog movable into operative position when 1;;the clamp is closed, and a transversely-ex- Wtended latch to engage saiddog and hold it from" movement, to lock said members in closed"position, the dog passing'under and momentarily lifting 'thelatch as theclamp is closed, means to efliect'bo dily movement of the work-clampduring the stitching ofa 7b buttonhole, means to closethe clamp prior"to the stitchingoperation and thereby effect movement of the doginto'locking engagement with the latch, and a latch-releasing device onsaidrock-shaft broughtinto'position by rotation of the. rock-shaft toengage and lift the latch out of engagement with andthereby release thed0g, to ermit' the opening of the work-clampwhen t e lat- 9'. lfi i-afbuttonhole sewing machine pro vided withta stitch-forminginstrumentality can' pass, clamp-closing devices, j'and a '95transversely extended: latch to retain the clamp closed, said latchbeing pivotally mounted on the lower clamp member and having at itsinner end a cam, means independent of the clamp to actuate said closingdevices prior to the stitching operation and bring them under thecontrollof the-latch, mechanism to eifeot bodily movement of thework-clamp during the formation-of-a' buttonhole'and to thereafterreturn the clamp to normal position, and means mounted on,

and operatively positionedby rotative movement of the saidrock-shaift'to engage the cam of androck the-latch to release the, clamp-closingdevices from control of said latch and permitopen'ingof the work; clampafter the completion-of 'a buttonhole.

10. In a buttonhole sewing machine vprovided with a buttonhole-cuttingdevice and 'a stitch-forming instrumentalityfixedly 0 115.

sitioned as a whole with relation to said cutting device, incombination, a. stationary bed-plate by which said instrumentality issupported,' a; work-clamp bodily movable upon the bed-plate to presentthe work to said stitch-forming instrumentality and thereafter to thecutting device, to effect first I the stitching-and then thecutting of-abuttonhole,' 'means beneath the bed-plateand .operatively connected withthe work-clamp to effect the bodily movement thereof,- a high speedmechanism to actuate said means when the work-clamp is-moved tostitching position. and thereafter to foutting position,

a low speed mechanism to actuate said 1 ter is returned 'tonormalposition after the p complelflon of a buttonhole. I

memes means. duningthe sti ehing the time vided with. abuttonholeenttangdevice and 7' gagement throu hout its length withthehole, dev ces moving with the workclamp to throw said; high and; low:speed mechanisms into and out: of action, at the proper; t1mes. I

1-. In; a button-hole'sew ng mac ine 19150 a stitch-.iforminginst-numentalityfixedlyp0,- sitioned asta whole with. relation to saidcue. ting device, in combination, a stationany bed-plate by which saiidinstrumentality is supported, a work-clamp bodily movable upon thebed-plateto presentthe work to said stitchrforming instcwncntaiity andto' the cutting device; alternation means, ineluding a carnierlongitudinally slidable beneath the bedrplateconnected with the;

worksclamp, toefi'ect bodily movement ot the latter-trout stitching to.cutting-position, and vice versa, and. during the stitching opr oration,high peed. mechanism to actuate said means when the stitcheiorming'instrumentalityis; iiioperati-ve low speed: mecha nism; to actuate saidmeans during the stitche' 'ing operation and also-.operatingsaidstitchforming instrumentality', controlling. mem bers mounted on thecarnier to. govern the action of said'h gh and low speed'mechalisnri andmeans. mounted' 'on the bed-plate hole, said; clam-p comprising lowerand up per members, the lower member having; a longitudinal: groove inltsunderside adjacent one of its side edges, separatemeans, includ ing adaterally movableand elongated guide member said groove and sliding enr.

saidlower-mom en of the work-clamp, to move the latter periodically andbodily at right angles to the path of movement oi; the carrier, saidcarrier and: guide member-being maintained in parallelismiat; alxljtimes, high and low speed mechanisms, and means to t row sa d me hanismeate action a al er;- natlon to efiect the reciprocating movement of theclamp carrier.

13. In a buttonhole sewing machine, a

stitchforming instrumentality, a stationary bed-plate, a work-clamp,means, including a reciprocating carrier slidably mounted at theunderside of the bed-plate; to move the clamp bodily in the direction ofthe length of abuttonhole, separatemcans, including a member in slidingengagement with the nk-damn; o move fl elatt n p r od ca ly a ighangles? to the path oi movement at the carrier,and a detachable socketand lug connection between said; carrier and the Work-- clamp; wherebythe; latter may be moved laterally with relation toits carrier Whilepositively connected therewith, V Y

114 In a buttonhole sewing machine, a

bed-plate, a-work-clanap, means, including" a stitch-forminginst-rumentality, a stationary reciprocating carrier slidably mounted atI the undersideot the lied-plate v to move the clamp bodily inthedirection of the length of a buttonhole, separate means, including amember'in sliding engagement; with thework-clamp, to move the latterperiodically the carrier, said carrier having a lateral socket in oneside thereof, and a yieldingly, sustained lug attached to the workclampand; adapted to snap into the socket, to theneby detachably and;positively opnneet the work-clamp and the carrier. I

- 15. Ina. buttonholc sewing machine, a Stat-ionany bed-plate,v awork-clamp longitudi-- nally- Inovable thereon, a reciprocating car atright angles to the path'o-f .mmement oi rien. on, said bed-plate andpositively con-- 1 nected at one end with the work-clamp, va

fixed: guideway on.- the bed-plate to coiiperate' with the other-end otthe carrier, a rotating cam cooperating with the carrier tomoveit andthe work-clamp, in one direction and then in theopposite direction forthe stitch= ing of first one and then the other side oi?- thebuttonhole,said cam having a dwell por-- tion to, retain the calanier temporarilyat rest between such'movements thereof, and sepa-v rate meanscooperating with. and. to move the worksclamp, laterally relatively tosaid a I i carrier while the carrier is at rest and the end ofthebuttonhole is being stitchedg combined. with astitch-for1ninginstrumentality toefiiect the stitching ofthe buttonhole,low

speed'mechanism to eifect the rotation of said cam, when the stitch-forming instru.-'

mentality isin, action, and high speed mach-I anism. to. eiiect rotationof the cam when:

said-instrumentality is out of action.

"16;, In a buttonhole sewing machine, a bedrplate, a Work-clamp. movablethereon longitudinally and laterally, said clamp includingalowe'nmembenmeans, including a sliding carrierlongitudinally movable in afixedpath beneath the bed-plate, to effect longitudinal bodilyamazementv of the work clamp, an ear on thecarrier provided with alateral. socketpavpositive, la-terally movable connection between thecarrier and the clamp, comprising a'spring finger on the lower memberof'the work-clamp, and a lateral projection on the finger to enter thesocket in the ear of the carrier, and periodically acting means to movethe work-clamp bodily and laterally on the bed-plate and relatively tothe carrier.

17. In a' buttonhole; sewing machine provided with a stitch-forminginstrumentality and a cutting device, a work-clamp, stopping means forthe machine, a reciprocating carrier positively connected with theworkclamp to'move the latter frontward and backward during the stitchingof the sides of a buttonhole and then 'into position for the cuttingdevice to cut the materialin the work-clamp, said carrier thereaftereffecting an additional and final backward movement of the work-clamp,an actuatingdevice for said stopping means, set-inbperation by suchadditional and final .inovement of the carrier after the cuttingdevicehas. operated,- and means mounted upon and grooved as to itsoperation by amember'of thestitchgforming instrument-ality to opensimultaneously the ,clampfor the releaseof the-material. l

18 In a buttonhole sewing machine having a cutting device and astitch-forming instrumentallty actuated in alternation and relativelyfixed with relation to each other,

a bodily movable work-clamp, means to move it to position the work firstwith relation to the stitch-formin instrumentality while it is in actionand t en with relation to the cutting device whilesaid'instrumentalityisat rest, said means including a reciprocatingcarrier positively connected with the work-clamp,'mechanism to actuatethe stitch-forming instrumentality, and a crate.

1 ity, means, including a carrier'operatively- 7 connected with thework-clamp, to effect bodily movement of the latter, anda-lengthcontrolling member adjustably mounted onsaid carrier tocooperate with said controlling mechanism and. determine the time whenthe driving means shall be thrown into v two subscribing witnesses.

and out of action, adjustment of.said lengthcontrolling member varyingthe length of the buttonhole to bevstitched'.

20. Ina buttonhole sewing machine, a

bed-plate, a stitch-forming instrumentality fixedly mounted thereon,driving means for said'inStrument'aIity, controlling mechanism to throwthe driving means into and'out of action, to thereby start and stop-thestitching operation, a work-clamp bodily movable on the bed-platerelatively to the stitchforming instrumentality, a positivelyreciprocated' carrier to effect bodily movement of the work-clamp, and amember adjustably {connected with said carrier and accessible at the'tgpof the bed-plate, to cooperate with said'c ontrolling mechanism andcause the driving means to be thrown into and out of" action, adjustmentof said member deter-- the length of the buttonhole to bestitched. 7

mining 21. In a buttonhole sewing machine, a

bed-plate, a stitch-forming instrumentality fixedly mounted thereon andadapted to stitch the opposite sides and the eye-end of a buttonhole,mechanism to throw said' instrumentality into and outof action,mechanism to'governthe spacingof the stitches for the sides and eye-endof the buttonhole, a work-clamp, means including a carrier slidablymounted onthe bed-plate, to move said work-clamp bodily lengthwise vofthe buttonhole duringthe stitching of the oppo site sides thereof,other' means to move the -work-clamp laterally when the eye-end is beingstitched, andindependent controlling members adj ustablymounted on'saidcarrier,

one of-said members cooperating with and controlling the mechanism whichthrows the stitch-forming instrumentality into and out of action, togovern the length of the button hole, the other of said controllingmembers cooperating with andcontrolling the operation of the mechanismwhichv governs the spacing ofthe stitches.

In testimony whereof, I have signed my name to this specification, inthe presence of I JOHN Kinwicz.

\Vitnesses:

HAROLD J; Wool), PAUL SOHOLZ.

Correction in Letters Patent No. 1,030,589.

It is hereby certified thet in Letters Patent No. 1,030,;589,grant-eiifiune 25, 1912,

upon the applieation of John Kiewicz, of Hyde Park, Massachiisott's, foran imiarovement in fButtor hole-Seviring Machines, mi erroi appeersinth'e printcdspecification i eq uiring correction as follows: Page 12,line 16, for the ivold F grooved read govwned,

and thet the said Letters Patent should be read with this correctionthereinthat the eamemay confoi'hri to the record of the case in thePatent Ofliee.

Signed and sealed this 23rd day of J uiy, A. D., 1912;

[SEAL-1 o. o. BILLINGS,

Acting Oommissioner 0] Patents.

